How do i Hook up my Back speakers in my 99' Dodge Neon?

[clevelands23]

I just recently baught 2 sony explode 3-way voice 6x9 speakers for the back of my Neon, but the wires dont match up with the wires in the car. I cant hook them to the back of my Head unit because i already have my subs hooked up to that.... Im lost...